To provide a plasticizing device capable of easily executing maintenance of a barrel. A plasticizing device includes: a drive motor; a flat screw having a groove forming surface in which a groove is formed, and rotating around a rotation axis of the drive motor; a barrel having a facing surface facing the groove forming surface and having a communication hole formed therein; and a heating unit configured to heat a material supplied between the flat screw and the barrel. The barrel has a separate structure including, when viewed from a direction orthogonal to the rotation axis, a first barrel having the facing surface, and a second barrel separated from the facing surface.

A plasticizing device includes: a flat screw that has a groove forming surface on which a spiral first groove is formed, and that rotates; a barrel that has a facing surface facing the groove forming surface and that includes a communication hole through which a plasticizing material flows; a heater that heats resin pellets; and a screw case that accommodates the flat screw and that includes a passage port through which the resin pellets pass toward the flat screw, in which the flat screw has a first side surface on which a first supply port for supplying the resin pellets to the first groove is formed and a second side surface formed on a side farther from the barrel than the first side surface, and a first distance, which is a shortest distance between the first side surface and the screw case, is larger than a second distance, which is a shortest distance between the second side surface and the screw case.

A plasticizing device includes: a flat screw that has a groove forming surface on which a spiral first groove is formed, and that rotates; a barrel that has a facing surface facing the groove forming surface and that includes a communication hole through which a plasticizing material flows; a heater that heats resin pellets; and a screw case that accommodates the flat screw and that includes a passage port through which the resin pellets pass toward the flat screw, in which the flat screw has a first side surface on which a first supply port for supplying the resin pellets to the first groove is formed and a second side surface formed on a side farther from the barrel than the first side surface, and a first distance, which is a shortest distance between the first side surface and the screw case, is larger than a second distance, which is a shortest distance between the second side surface and the screw case.

An injection molding system includes: an injection molding machine configured to operate in accordance with a command generated using a first language, and inject a molten material into a mold to mold a molded object; a robot configured to operate in accordance with a command generated using a second language, and convey the molded object; and a control device configured to control the injection molding machine and the robot. When determining that an error occurs in at least one of the injection molding machine and the robot, the control device transmits, to the injection molding machine, a command generated using the first language and for causing the injection molding machine to execute a return operation, and transmits, to the robot, a command interpretable by the second language and for causing the robot to execute a return operation, so as to cause the injection molding machine and the robot to execute the return operations.

An injection molding system includes: an injection molding machine configured to operate in accordance with a command generated using a first language, and inject a molten material into a mold to mold a molded object; a robot configured to operate in accordance with a command generated using a second language, and convey the molded object; and a control device configured to control the injection molding machine and the robot. When determining that an error occurs in at least one of the injection molding machine and the robot, the control device transmits, to the injection molding machine, a command generated using the first language and for causing the injection molding machine to execute a return operation, and transmits, to the robot, a command interpretable by the second language and for causing the robot to execute a return operation, so as to cause the injection molding machine and the robot to execute the return operations.

An injection molding apparatus includes a support that supports a molding die including an upper die and a lower die, and an injection unit that injects a molding material toward a cavity defined by the upper die and the lower die. In the state in which the molding die is supported by the support, the injection unit, the upper die, and the lower die are arranged sequentially from above in the vertical direction. The injection unit includes a rotating flat screw having a groove forming surface in which a groove is formed, a barrel having a flat screw facing surface facing the groove forming surface and having a communication hole into which the molding material flows, and a heater that heats a material supplied to the space between the groove forming surface and the flat screw facing surface, plasticizes at least part of the material through the rotation of the flat screw and the heat produced by the heater to produce the molding material, and delivers the molding material to the communication hole.

An injection molding apparatus includes a support that supports a molding die including an upper die and a lower die, and an injection unit that injects a molding material toward a cavity defined by the upper die and the lower die. In the state in which the molding die is supported by the support, the injection unit, the upper die, and the lower die are arranged sequentially from above in the vertical direction. The injection unit includes a rotating flat screw having a groove forming surface in which a groove is formed, a barrel having a flat screw facing surface facing the groove forming surface and having a communication hole into which the molding material flows, and a heater that heats a material supplied to the space between the groove forming surface and the flat screw facing surface, plasticizes at least part of the material through the rotation of the flat screw and the heat produced by the heater to produce the molding material, and delivers the molding material to the communication hole.

A plasticizing device includes a drive motor, a flat screw, a barrel, a heater, a cooler, and a controller, wherein the controller executes a plasticizing step of controlling the drive motor, the heater, and the cooler to plasticize a material fed between the flat screw and the barrel to make the material plasticized outflow from a communication hole, a stopping step of stopping at least the drive motor and the heater after executing the plasticizing step to stop the plasticizing step, and a start-up step of starting up the heater and controlling at least one of the heater and the cooler so that the outer circumference of the flat screw becomes at a temperature no higher than in the plasticizing step when resuming the plasticizing step after a predetermined time elapses from the stopping step.

A plasticizing device includes a drive motor, a flat screw, a barrel, a heater, a cooler, and a controller, wherein the controller executes a plasticizing step of controlling the drive motor, the heater, and the cooler to plasticize a material fed between the flat screw and the barrel to make the material plasticized outflow from a communication hole, a stopping step of stopping at least the drive motor and the heater after executing the plasticizing step to stop the plasticizing step, and a start-up step of starting up the heater and controlling at least one of the heater and the cooler so that the outer circumference of the flat screw becomes at a temperature no higher than in the plasticizing step when resuming the plasticizing step after a predetermined time elapses from the stopping step.

An injection molding system includes: an injection molding machine where a shaping mold is installed; a material supply device supplying a material to the injection molding machine; a temperature controller controlling a temperature of the shaping mold; a dryer drying a material stored in the material supply device; a controller controlling the injection molding machine; and a casing. The injection molding machine, the material supply device, the temperature controller, the dryer, and the controller are provided inside the casing. The casing has a caster and is configured to be movable.